Benchmark cool companions: ages and abundances for the PZ Telescopii system

@article{Jenkins2011BenchmarkCC,
  title={Benchmark cool companions: ages and abundances for the PZ Telescopii system},
  author={James S. Jenkins and Ya. V. Pavlenko and Oleksiy Ivanyuk and Jos{\'e} A. Gallardo and M. I. Jones and Avril C. Day-Jones and Hugh R. A. Jones and Mar'ia Teresa Ruiz and David J. Pinfield and Larisa A. Yakovina},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2011},
  volume={420},
  pages={3587-3598}
}
We present new ages and abundance measurements for the pre-main-sequence star PZ Telescopii (more commonly known as PZ Tel). PZ Tel was recently found to host a young and low-mass companion. Such companions, whether they are brown dwarfs or planetary systems, can attain benchmark status by detailed study of the properties of the primary, and then evolutionary and bulk characteristics can be inferred for the companion. Using Fibre-fed Extended Range Optical Spectrograph spectra, we have measured… 

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References

SHOWING 1-10 OF 82 REFERENCES

Direct detection of a substellar companion to the young nearby star PZ Telescopii

Aims. We study the formation of substellar objects (exoplanets and brown dwarfs) that are companions to young nearby stars. Methods. With high-contrast AO imaging obtained with NACO at ESO VLT, we

THE GEMINI NICI PLANET-FINDING CAMPAIGN: DISCOVERY OF A CLOSE SUBSTELLAR COMPANION TO THE YOUNG DEBRIS DISK STAR PZ Tel

We report the discovery of a tight substellar companion to the young solar analog PZ Tel, a member of the β Pic moving group observed with high-contrast adaptive optics imaging as part of the Gemini

Chromospheric activities and kinematics for solar type dwarfs and subgiants : analysis of the activity distribution and the AVR

Aims. In this work we present chromospheric activity indices, kinematics, radial-velocities, and rotational velocities for more than 850 FGK-type dwarfs and subgiant stars in the southern hemisphere

The Planet-Metallicity Correlation

We have recently carried out spectral synthesis modeling to determine Teff, log g, v sin i, and [Fe/H] for 1040 FGK-type stars on the Keck, Lick, and Anglo-Australian Telescope planet search

Discovery of a Wide Substellar Companion to a Nearby Low-Mass Star

We report the discovery of a wide (135 ± 25 AU), unusually blue L5 companion, 2MASS J17114559+4028578, to the nearby M4.5 dwarf G203-50 as a result of a targeted search for common proper motion pairs

Hokupa’a-Gemini Discovery of Two Ultracool Companions to the Young Star HD 130948

We report the discovery of two faint ultracool companions to the nearby (d ~ 17.9 pc) young G2 V star HD 130948 (HR 5534, HIP 72567) using the Hokupa'a adaptive optics (AO) instrument mounted on the

NACO-SDI imaging of known companion host stars from the AAPS and Keck planet search surveys

Context. Direct imaging of brown dwarfs as companions to solar-type stars can provide a wealth of well-constrained data to “benchmark” the physics of such objects, since quantities like metallicity

A Long-lived Accretion Disk around a Lithium-depleted Binary T Tauri Star

We present a high-dispersion optical spectrum of St 34 and identify the system as a spectroscopic binary with components of similar luminosity and temperature (both M3 ± 0.5). Based on kinematics,

The Late-T Dwarf Companion to the Exoplanet Host Star HD 3651: A New Benchmark for Gravity and Metallicity Effects in Ultracool Spectra

We present near-IR (1.0-2.5 μm) photometry and spectroscopy of HD 3651B, the low-luminosity, wide-separation (480 AU) companion to the K0 V exoplanet host star HD 3651A. We measure a spectral type of

Brown Dwarf Companions to G-Type Stars. I. Gliese 417B and Gliese 584C

We present astrometric and spectroscopic observations confirming that two nearby G dwarf systems (Gliese 417 = BD+36°2162 and Gliese 584AB = η CrB AB) have a widely separated, L dwarf, substellar
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